Marketing departments want us to believe that PCs, laptops and netbooks become obsolete after a couple of years, but it's not true.The computer industry has evolved over the years more rapidly than any industry in contemporary history. Year after year engineers have worked valiantly to bring us, the end users, faster and more capable hardware without sacrificing reliability. Programmers and application developers have been equally quick to develop new software that puts to use the new hardware specifications. However, while striving to sell more and more products, marketing departments want us to believe that PCs, laptops and netbooks become obsolete after a couple of years, and not replacing them makes us luddites.